Brake control devices

Safety relay PNOZ s50 for safe brake control

Applications with safety brakes and holding brakes require reliable brake monitoring. This eliminates all potential hazards for the user – even when the drive is de-energised. With the stand-alone safety relay PNOZ s50, Pilz is offering an economical solution for controlling two safety brakes up to category PL e of EN ISO 13849-1.

On the safety relay PNOZ s50, temporary overexcitation is followed by voltage reduction, for which parameters can be set. Short ventilation times are achieved as a result, helping to make your application more energy-efficient. On the one hand, safe brake control enables rapid switching in emergency situations. On the other hand, it ensures slow, low-wearing switching in normal operation, thereby reducing maintenance requirements.

Safe and contactless braking – Your benefits

Maximum safety up to PL e of EN ISO 13849-1 when two brakes are activated (holding brakes or safety brakes)

Contactless technology with up to 4.5 A per safety brake enables short reaction times and a sustainable solution

Wear-free braking

High safety and low wear on the brake thanks to fast or slow shutdown of the power circuits

Rapid diagnostics by means of display

Manufacturer-independent brake control thanks to safe, digital inputs

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Features of safety relay PNOZ s50

Simple menu navigation using a rotary knob

Setting parameters and diagnostic messages shown on the display

Safety relay with two 2-pin, safe electronic digital outputs for 24 V DC, each with 4.5 A

Reduced cycle times through temporary overexcitation with subsequent voltage reduction

Application on gravity-loaded axes

The safety relay PNOZ s50 can be used in many application areas to safely control brakes. For example, in stage technology; on machine tools; on press brakes; on packaging machines; in test stand technology; in materials handling technology or in energy and environmental technology.

Machines with Z-axes

The following machines have Z-axes, for example:

Loading and unloading gantries

Palletising machines

Milling machines

Robot axes

Lifting devices

Machines with valves/pneumatics/hydraulics

Winches

Application in stage technology on winches

In some applications, it is necessary to safeguard a second brake alongside the holding brake. In the field of stage technology, for example, winches are operated with a dual brake. The PNOZ s50 can control two powerful brakes safely without the use of contacts.

Application on scissor tables

Scissor tables are lifting devices with gravity-loaded axes. They are used during final assembly in automotive production, for example. When employees are working on vertical axes, various requirements from the Machinery Directive apply.